分享程序员开发的那些事...
更新时间：2022-09-23 08:55:45
一、操作思路：
1）停止mysql服务
2）启动时添加“--skip-grant-tables”参数
3）修改密码
4）重启mysql服务
二、执行过程
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
# netstat -tunlp | grep 330*tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 13157/mysqld tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 13874/mysqld tcp 0 0 0.0.0.0:3308 0.0.0.0:* LISTEN 12388/mysqld # 这里假设忘记的是3308实例的root密码# 先安全关闭另外两个实例# /data/3306/mysql stop# /data/3307/mysql stop# killall mysqld# mysqld_safe --defaults-file=/data/3308/my.cnf --skip-grant-tables &[2] 10883# 161011 22:05:47 mysqld_safe Logging to '/data/3308/mysql_oldboy3308.err'.161011 22:05:48 mysqld_safe Starting mysqld daemon with databases from /data/3308/data
# mysql -uroot -p -S /data/3308/mysql.sockEnter password: （这里直接回车就进去了）Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 1
Server version: 5.5.32-log Source distributionCopyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> update mysql.user set password=password("redhat123456") where user='root';
Query OK, 4 rows affected (0.00 sec)Rows matched: 4 Changed: 4 Warnings: 0# 更新root账号的密码mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)# 刷新权限# netstat -tunlp | grep mysqltcp 0 0 0.0.0.0:3308 0.0.0.0:* LISTEN 11620/mysqld [1]+ Done mysqld_safe --default-file=/data/3308/my.cnf --skip-grant-tables --user=mysql
# pkill mysql# netstat -tunlp | grep mysql# /data/3308/mysql startStarting MySQL...# echo $?0 |
三、验证
|
1
2
3
4
5
6
7
8
9
10
|
# mysql -uroot -predhat123456 -S /data/3308/mysql.sockWelcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 1
Server version: 5.5.32-log Source distributionCopyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> |